Sensitivity to termination morphology of light coupling in photonic-crystal waveguides

2004 ◽  
Vol 69 (19) ◽  
Author(s):  
Lan-Lan Lin ◽  
Zhi-Yuan Li
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Waveguides ◽  
Light Coupling

Design and Analysis of Taper Structure for Light Coupling into Photonic Crystal Waveguides Fabricated by Si-Ion Implantation

2013 ◽  
Vol 534 ◽  
pp. 162-166
Author(s):  
Amarachukwu Valentine Umenyi ◽  
Shusuke Kikuchi ◽  
Tomoyuki Sasaki ◽  
Kenta Miura ◽  
Osamu Hanaizumi
Keyword(s):  
Photonic Crystal ◽  
Integrated Circuits ◽  
Ion Implantation ◽  
Polarized Light ◽  
Photonic Crystal Waveguides ◽  
Practical Applications ◽  
Waveguide Width ◽  
Light Coupling ◽  
Propagation Methods ◽  
Si Ion Implantation

In this paper, we designed and analyzed an efficient taper structure to couple light into and out of photonic crystal waveguides (PhCWs) fabricated by Si-ion implantation and electron beam lithography. The coupling structure employs the gentle refractive-index distribution produced in the SiO2layer by Si-ion implantation. A taper structure is designed for effective coupling of transverse electric (TE) polarized light (λ = 1.55 μm) into a submicron size PhCW consisting of triangular lattice of air holes (lattice constant,a= 0.666 μm, radius of air holes,r= 0.232 μm, waveguide width, W1 ~ 0.7 μm). The influence of the taper length on the transmission characteristics is investigated. Efficiency in excess of 95% is demonstrated using the finite-difference time-domain and beam propagation methods. This is important for their practical applications in photonic integrated circuits.

Light coupling for single-mode photonic crystal waveguides

2006 ◽  
Vol 35 (1) ◽  
pp. 93-98 ◽  
Author(s):  
Yanrui Wu ◽  
Xiaoshuang Chen ◽  
Yong Zeng ◽  
Wei Lu
Keyword(s):  
Photonic Crystal ◽  
Single Mode ◽  
Photonic Crystal Waveguides ◽  
Light Coupling

Light coupling with multimode photonic crystal waveguides

2004 ◽  
Vol 84 (23) ◽  
pp. 4699-4701 ◽  
Author(s):  
Zhi-Yuan Li ◽  
Lan-Lan Lin ◽  
Kai-Ming Ho
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Waveguides ◽  
Light Coupling

Topology optimisation of slow light coupling to photonic crystal waveguides

2007 ◽  
Vol 43 (17) ◽  
pp. 923 ◽  
Author(s):  
L. Yang ◽  
A.V. Lavrinenko ◽  
L.H. Frandsen ◽  
P.I. Borel ◽  
A. Te^tu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Slow Light ◽  
Topology Optimisation ◽  
Photonic Crystal Waveguides ◽  
Light Coupling

Direct Observation of Surface Mode Excitation and Slow Light Coupling in Photonic Crystal Waveguides

Nano Letters ◽  
2007 ◽  
Vol 7 (8) ◽  
pp. 2341-2345 ◽  
Author(s):  
Valentyn S. Volkov ◽  
Sergey I. Bozhevolnyi ◽  
Lars H. Frandsen ◽  
Martin Kristensen
Keyword(s):  
Photonic Crystal ◽  
Direct Observation ◽  
Slow Light ◽  
Surface Mode ◽  
Photonic Crystal Waveguides ◽  
Light Coupling ◽  
Mode Excitation

scholarly journals Time-reversal constraint limits unidirectional photon emission in slow-light photonic crystals

2016 ◽  
Vol 374 (2075) ◽  
pp. 20150263 ◽  
Author(s):  
Ben Lang ◽  
Daryl M. Beggs ◽  
Ruth Oulton
Keyword(s):  
Photonic Crystal ◽  
Time Reversal ◽  
Slow Light ◽  
Photon Emission ◽  
Light Regime ◽  
Photonic Crystal Waveguide ◽  
Photonic Crystal Waveguides ◽  
Matter Coupling ◽  
Directional Emission ◽  
Light Coupling

Photonic crystal waveguides are known to support C-points—point-like polarization singularities with local chirality. Such points can couple with dipole-like emitters to produce highly directional emission, from which spin-photon entanglers can be built. Much is made of the promise of using slow-light modes to enhance this light–matter coupling. Here we explore the transition from travelling to standing waves for two different photonic crystal waveguide designs. We find that time-reversal symmetry and the reciprocal nature of light places constraints on using C-points in the slow-light regime. We observe two distinctly different mechanisms through which this condition is satisfied in the two waveguides. In the waveguide designs, we consider a modest group velocity of v g ≈ c /10 is found to be the optimum for slow-light coupling to the C-points. This article is part of the themed issue ‘Unifying physics and technology in light of Maxwell's equations’.

Ultracompact tapers for light coupling into two-dimensional slab photonic-crystal waveguides in the slow light regime

2008 ◽  
Vol 47 (1) ◽  
pp. 014602 ◽  
Author(s):  
Delphine Marris-Morini ◽  
Eric Cassan ◽  
Damien Bernier ◽  
Guillaume Maire ◽  
Laurent Vivien
Keyword(s):  
Photonic Crystal ◽  
Slow Light ◽  
Light Regime ◽  
Two Dimensional ◽  
Photonic Crystal Waveguides ◽  
Light Coupling

Slow-light Enhanced Nonlinear Optics in Silicon Photonic Crystal Waveguides

PIERS Online ◽  
2010 ◽  
Vol 6 (3) ◽  
pp. 273-278 ◽  
Author(s):  
David J. Moss ◽  
B. Corcoran ◽  
C. Monat ◽  
Christian Grillet ◽  
T. P. White ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Nonlinear Optics ◽  
Slow Light ◽  
Photonic Crystal Waveguides ◽  
Silicon Photonic
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